package com.hzc.gulimall.ware.config;

import org.springframework.amqp.core.*;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.HashMap;
import java.util.Map;

@Configuration
public class MQConfig {
    /**
     * String name, boolean durable, boolean autoDelete, Map<String, Object> arguments
     */
    @Bean
    public Exchange stockEventExchange() {

        return new TopicExchange("stock-event-exchange", true, false);
    }

    /**
     * String name, boolean durable, boolean exclusive, boolean autoDelete, @Nullable Map<String, Object> arguments
     */
    @Bean
    public Queue stockReleaseStockQueue() {
        return new Queue("stock.release.stock.queue", true, false, false);
    }

    @Bean
    public Queue stockDelayQueue() {
        Map<String, Object> args = new HashMap<>();
        // 信死了 交给 [stock-event-exchange] 交换机
        args.put("x-dead-letter-exchange", "stock-event-exchange");
        // 死信路由
        args.put("x-dead-letter-routing-key", "stock.release");
        args.put("x-message-ttl", 120000);//2分钟释放库存
        return new Queue("stock.delay.queue", true, false, false, args);
    }

    /**
     * 普通队列的绑定关系
     * String destination, DestinationType destinationType, String exchange, String routingKey, @Nullable Map<String, Object> arguments
     */
    @Bean
    public Binding stockLockedReleaseBinding() {
        return new Binding("stock.release.stock.queue", Binding.DestinationType.QUEUE, "stock-event-exchange", "stock.release.#", null);
    }

    /**
     * 延时队列的绑定关系
     * String destination, DestinationType destinationType, String exchange, String routingKey, @Nullable Map<String, Object> arguments
     */
    @Bean
    public Binding stockLockedBinding() {
        return new Binding("stock.delay.queue", Binding.DestinationType.QUEUE, "stock-event-exchange", "stock.locked", null);
    }
}
